传声器前置放大器

电容式传声器必须结合前置放大器使用,以提供阻抗变换、滤波,以及驱动相当长的电缆,并确保信号没有明显衰减。

Brüel & Kjær提供了大量稳定可靠的和声学优化的前置放大器,允许在各种环境条件下运行。我们的前置放大器的高输出电流能力,使得即使在高频、高声压级时,也可使用超长电缆。前置放大器的尺寸为½和¼英寸,可直接与最常用的传声器匹配。对于1英寸和1/8英寸传声器,可使用转接头。

频率范围频率范围频率范围

2660 - 1英寸传声器前置放大器,极低噪声,增益20dB,用于4179型传声器

Designed for very-low-level sound measurements.   Read more
1/2 and 1/1 英寸Low-noise  

2660-W-001 - 1英寸传声器前置放大器,极低噪声,增益20dB,用于4179型传声器

Designed for very-low-level sound measurements. This is a modified version that can be used with PULSE using extension cable WL-1302.   Read more
1/2 and 1/1 英寸Low-noise  

2669-B - ½英寸传声器前置放大器,锥形,包括电缆AO-0428,B&K连接器

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1/2 英寸Acoustical Charge Injection Calibration 

2669-C - ½英寸传声器前置放大器,圆柱形,LEMO 1B连接器,无电缆

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1/2 英寸Cylindrical Charge Injection Calibration 

2669-L - ½英寸传声器前置放大器,圆柱形,LEMO 1B连接器,无电缆

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1/2 英寸Acoustical Charge Injection Calibration 

2670 - 1/4英寸传声器前置放大器,包含集成2米电缆,LEMO 7针 插头

Designed to operate over a wide range of temperature, humidity and other environmental conditions.   Read more
1/4 英寸Phase Charge Injection Calibration 

2670-WB-1419 - 1/4英寸传声器前置放大器,包含集成2米电缆,LEMO 7针 插头

Designed to operate over a wide range of temperature, humidity and other environmental conditions. Optimised for airbag measurements.   Read more
1/4 英寸Airbag  

2671 - CCLD microphone preamplifier for 1/2-inch prepolarized microphones, without cable

Designed to be used in a wide range of environmental conditions and in narrow spaces.   Read more
1/2 英寸CCLD  

2673 - ½英寸传声器前置放大器,带有插入电压功能

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1/2 英寸 Insert Voltage Calibration 

2695 - 型½英寸传声器前置放大器

Designed for acoustical measurements with a CCLD input module. Prepolarized microphones can be connected to the preamplifier.   Read more
1/2 英寸Short CCLD  

2699 - DeltaTron、A计权传声器前置放大器

Designed to eliminate low-frequency disturbance caused by body boom and road noise which would otherwise be a source of error during in-car measurements using an A-Weighting filter.   Read more
1/2 英寸A-weighted CCLD  
 
  
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